The difference between ASCE7-05 and ASCE7-10 windspeed maps is that the latest edition provides strength-level design wind forces. This means that the load factor previously used of 1.6 is already incorporated into the wind speed 3-second gust (mph) value. ASCE7-10 windspeed maps also provide multiple category maps which has eliminated the importance factor from the wind design.

Designcriteriabyzip.com is a spinoff of windspeedbyzip.com and is the site that offered design wind speeds in an online format back in 2008 to easily obtain design windspeeds used by architects, builders, designers, engineeers, etc. The reason to offer this service started because two (2) structural engineers from Johannessen & Leone Associates saw the need to obtain these values quickly and accurately.